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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

The 31-d NOEC for MTBE in the freshwater fish Pimephales promelas is 279 mg/l, a safety factor of 2 will be applied on this value.

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater fish:
140 mg/L

Additional information

No long-term studies with fish are available for TAEE, an Early Life Stage test with eggs and larvae/fry of fathead minnow (Pimephales promelas) is available for MTBE (ENSR, 1999) (see reporting format for the analogue approach as attached to the respective IUCLID entry). This result is used for read-across, the 31-d NOEC is 279 mg/l and a safety factor of 2 will be applied to this value. An effect concentration of 140 mg/l for TAEE will be used in the assessment.